Re: [Axiom-developer] hyperlinked algebra

[Ralf Hemmecke]

C Y wrote:
> --- Ralf Hemmecke <address@hidden> wrote:

> XYPic:  Can create hyperlinked diagrams without requiring postscript
> specific logic, but result renders slowly in Acroread.  Command syntax
> is complex to say the least.  Does not have many packages written using
> it.

My from the point of being independent from PostScript, I would rather 
choose that package over pstricks. But as you say, it's quite a burden 
to learn it. And if the output renders slowly with acroread, that's 
another point against it.

> Neither way has yet demonstrated the ability to reproduce these
> diagrams in HTML, and I am not at all sure how we would even want to
> proceed there.  Images of the diagrams with image maps defined?  Some
> sort of fixed text positioning?

You are somewhat right. As for the web I would rather like to see 
something more interactive, like, for example, zooming in and out, 
selecting certain branches I want to see, etc. In fact, I am not sure 
whether I would want to see the graph printed.

When I started to look a bit more into the Algebra library shipped with 
Aldor, I took some time to produce a .fig of the categories, domains, 
and packages.

Click the "Graph" at http://www.hemmecke.de/aldor/

There are in fact two problems.
1) Get the graph right, ie, reflect the actual dom/cat/pgk in the
   library.
2) Show it in some form for humans.

The first point can certainly be done automatically some day. There 
should just be someone who would think of a nice format (SVG?) and 
writes a script which does this.

The second point is nearly impossible for a program. TouchGraph is not 
so bad, but I have the feeling that I don't easily get an _overview_ of 
the packages etc.

So getting a good Graph of the Algebra is not easy no matter whether we 
use pstricks or xypic.

Is there someone who is interested in (1)?

Ralf